diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2016-02-12 15:43:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-28 10:17:21 +0100 |
| commit | e6454536ad45f9e6a16da63f423bafc7a2bbdba1 (patch) | |
| tree | fff3560129f16dbc8915f53472786a919c640e5c /include | |
| parent | 7de85e493a1f6b6b5f8eea409564b55137755c98 (diff) | |
ip_tunnel: replace dst_cache with generic implementation
commit e09acddf873bf775b208b452a4c3a3fd26fa9427 upstream.
The current ip_tunnel cache implementation is prone to a race
that will cause the wrong dst to be cached on cuncurrent dst cache
miss and ip tunnel update via netlink.
Replacing with the generic implementation fix the issue.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Suggested-and-acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ip_tunnels.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h index 86a7bdd61d1a..74bc08d82e14 100644 --- a/include/net/ip_tunnels.h +++ b/include/net/ip_tunnels.h @@ -13,6 +13,7 @@ #include <net/netns/generic.h> #include <net/rtnetlink.h> #include <net/lwtunnel.h> +#include <net/dst_cache.h> #if IS_ENABLED(CONFIG_IPV6) #include <net/ipv6.h> @@ -85,11 +86,6 @@ struct ip_tunnel_prl_entry { struct rcu_head rcu_head; }; -struct ip_tunnel_dst { - struct dst_entry __rcu *dst; - __be32 saddr; -}; - struct metadata_dst; struct ip_tunnel { @@ -108,7 +104,7 @@ struct ip_tunnel { int tun_hlen; /* Precalculated header length */ int mlink; - struct ip_tunnel_dst __percpu *dst_cache; + struct dst_cache dst_cache; struct ip_tunnel_parm parms; @@ -248,7 +244,6 @@ int ip_tunnel_changelink(struct net_device *dev, struct nlattr *tb[], int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[], struct ip_tunnel_parm *p); void ip_tunnel_setup(struct net_device *dev, int net_id); -void ip_tunnel_dst_reset_all(struct ip_tunnel *t); int ip_tunnel_encap_setup(struct ip_tunnel *t, struct ip_tunnel_encap *ipencap); |